1 8 8 2 .] Recent Literature. $79 



appearance of the journal in point of mechanical execution is 

 excellent, though the substitution of simple 7" for 77/ in all cases, 

 being unusual, seems at first amusing. 



We will only add a brief mention of some of the general sum- 

 maries or essays, to indicate the range of subjects: Ihrthold, 

 Fertilization of Algae; Klcbs, Movement of vegetable Proto- 

 plasm; Sprengel, Orthonectidae ; Wudersheim, North American 

 Palaeontology; lhschoff\ Weight of the human Brain; Knupclin, 

 Duration of simple Psychic Processes ; Exner, Functioning of 

 the facetted Fye. The list might be greatly lengthened, but we 

 believe that the titles quoted suffice to demonstrate the wide 

 scope embraced. Several of the original articles are meritorious 

 contributions, and the numerous abstracts make up a good intro- 

 duction to the best current biological literature. We hope that 

 American naturalists will support this valuable enterprise by their 

 subscriptions. The price is very moderate, fifteen marks for a 

 yearly volume of Soo pages.— C. S. M. 



Pagexsteciier's General Zoology, 4TH Part. 1 — The fourth 



animals, thus ending the consideration of the organs of vegetative 

 life; and also to the external covering or integument of the body 

 of animals. We have to make the same criticism regard. ng the 

 cuts as in our former notice, the illustrations being too diminu- 

 tive and not clearly drawn and engraved. The lack of subdi- 

 vision into sections is only partly made up by a detailed and ex- 

 cellent table of contents. It is a useful work, valuable for refer- 

 ence, and the author is careful to cite his authorities. 



Brooks' Invertebrate Zoology. 2 — It is with great pleasure 

 that we have examined this work, and in a hasty manner read 

 portions of it. The scope of the work is best indicated by the 

 following extract from the preface: " This is a hand-book, not a 

 text-book, and the entire absence of generalization and compari- 

 son is not due to indifference to the generalizations of modern 

 philosophical morphology, but rather to a wish to aid beginners 

 to study them." Following out this idea. Dr. Brooks, in a very 

 thorough manner, takes up* in succession the Amoeba, Vorticella, 



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